Machine foe planing stereotype plates



(No Model.) 3 Sheets-Sheet 1.

L. GOSS.

MACHINE EOE PLANING' STEREOTYPE PLATES. v No. 383,221. Patented May 22,1888. i l

N w u g Q N T O l W I u" Q b 8 a? S p F f H I: N 8 M 5 S x I l I 1 N N fE 5 S 8 fig WITNESSES: l INVENTOE:

: BY MM N g ATTORNEYS.

3 Sheets-Sheet 2.

(No Model.)

L. GOSS.

MACHINE FOR PLANING STERBOTYPE PLATES. No. 383,221.

INVENTOR: 02%,

Patented May 22, 1888.

WITNESSES ATTORNEYS.

(No Model.) 3 Sheets-Sheet 3.

L. GOSS.

MAGHINE FOR PLANING STEREOTYPE PLATES. No. 383,221. Patented MayZZ,1888.

gmmssm: IINVENTOR: M, MW :21

4 ATTORNEYS.

N. PETERS, Pmwuuw m ner. Washington 0. c.

LUoiUs eoss, on NEW YORK, n. Y.

MACHINE FOR PLANING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent No. 383,221, dated May 22,18188.

Application filed February 29, 1958. Serial No. 265,669.

To all whom it may concern:

Be it known that I, LUoIUs Goss,of the city, county, and State of NewYork, have invented a new and Improved Machine for PlaningStereotypeIlates, of which the following is a full, clear, and exactdescription.

The object of my invention is to provide a machine for planing andtrimming stereotype plates which are cast with several spaced columns;and to this end my invention consists, principally, of several trimmingknives or cutters arranged to enter the spaces between columns and trimthe edges of the columns.

The invention also consists in forming or providing the bed plateorframe with astraightedge or offset to align the stereotype-plate withthe bed-plate and its line of motion, to insure accurate trimming of thecolumns.

The invention also consists of the construction, arrangement, andcombination of parts, all as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a plan view of my new and improved stereotype-planingmachine. Fig. 2 is a longitudinal sectional elevation of the same takenon the line at so of Fig. 1. Fig. 3 is a transversesectional elevationtaken on the line 3 y of Fig. 1, and Fig. 4 is an enlarged perspectiveview of one of the trimmingknives.

Upon the frame or table A,supported by the legs A, is placed thebed-plate B, providedwith the racks O O, with which mesh the pin ions DD on the crank shaft D for reciprocating the bed-plate to and fro pastthe trimming-knives E E and the plane F.

G is the stereotype-plate cast with several spaced columns, 99, unitedat their ends in casting by the end pieces, G. The slots or spaces 9 areby preference slightly enlarged at 9 to permit the free entrance of thetrim ming-kuives E between the columns. The knives E are secured to thecrossbar E, held at its ends in the vertical slots E E, and cams H H areformed on the bed-plate B, to elevate the said cross-bar and the knivesE over the end pieces, G, of the stereotype-plate. In the said slots Eare placed coiled springs J,whicli (N0 model.)

serve to force the cross-bar and knives downward when the cams H passfrom under the cross-bar, and thus enter the knives E into the slots 9between the columns.

The stereotypeplate G is held upon the bedplate B by the clamps K,andits outer end abuts against the plate L, pivoted to the bed-plate by thecentral pivot-pin,l,so that said plate L will be self-adjusting to theend of the stereotype plate if the same should be irregular, and thusprevent all straining of the plate when forced along in contact with thetrimming-knives E and planingknives F.

One edge of the bed-plate B is formed or pro vided with an offsetorstripdlf, having astraightedge exactly parallel with theline ofmovement of the bed-plate B. This straight-edge serves to align thestereotype-plate G with the bedplate; and for convenience in this regardI cast the stereotype-plate with a straight shoulder, m, to fit againstthe offset M, as will be understood from Fig. 3.

In operation, the bcd-plate being in the position shown in Fig. 1, thestereotype-plate is placed upon the bed-plate and secured. Thecrank-shaft D is then revolved, causing the bed-plate andstereotypeplate to be moved in the direction of the arrow. \Vhen thecams H pass from under the crossbar E, the said bar and thetrimming-knives are forced downward, causing the knives to enter theslots 9, so that they will trim the edges of the columns as they are drawu along by the movement of the bedplate. The knives E are lifted outof the slots 9 by the cams H H at the opposite end of the bed-plate. Inpassing the knife F the bottom of the stereotypeplate is planed in theusual manner. After the stereotype-plate has thus been trim med andplaned,and is removed from the bed-plate,the columns are cut apart bysaws or otherwise.

The shavings removed by the knives Edrop below the machine throughcorresponding slots 0 (I, made, respectively, in the bedplate B andtable A.

Having thus described my invention, what I claim as new, and desire tosecure by Let ters Patent, is

1. The combination, with the bed-plate B and its support, and means formoving it upon said support, of the series of knives E for trimming theedges of the columns, substantially as described.

2. The bed-plate B,forrned or provided with 5 an offset orstraight-edge, m, in combination with several trimming-knives, E, andmeans for moving the bed-plate, substantially as described.

3. The crossbar E, provided with several knives, E, held in verticalslots and acted upon by springs J, in combination with the bed-plate B,means for moving the same, and the cams H, substantially as and for thepurposes set forth.

4. The cross-piece E,provided with several knives, E, in combinationwith the bedplate,

and means for moving the same, and the planing-knife F, substantially asdescribed.

5. The bed-plate B,provided with clamps K and cams H H, in combinationwith the crossbar E and several knives, E, substantially as described.

6. The combination, with the bed-plate B, several knives, E, and meansfor moving the bed-plate, of the abutting plate L, centrally pivoted tothe bed-plate, substantially as and for the purposes described.

LUOIUS GOSS. Witnesses:

H. A. Wnsr, E. M. CLARK.

